<script setup>
    import { ref } from 'vue'
    import { Plus,Upload } from '@element-plus/icons-vue'
    import { useUserStore } from '@/stores'
    import {userUpdateAvatarService} from '@/api/user'
    import { ElMessage } from 'element-plus'

    // 基于store的数据，初始化imgUrl的数据
    const userStore = useUserStore()
    const imgUrl = ref(userStore.user.user_pic)
    const uploadRef = ref()
    const onSelectFile = (uploadFile) => {
        // 基于FileReader对象，读取文件内容
        const reader = new FileReader()
        reader.readAsDataURL(uploadFile.raw)
        reader.onload = () => {
            imgUrl.value = reader.result
    }
}



    const onUpdateAvatar = async() => {
        // 发送请求更新头像
        await userUpdateAvatarService(imgUrl.value)
        // 更新store中的数据
        await userStore.getUser()
        // 提示用户
        ElMessage.success('头像更新成功')
    }
</script>
<template>
    <page-container title="更换头像">
        <el-upload
        :auto-upload="false"
        ref="uploadRef"
    class="avatar-uploader"
    :show-file-list="false"
    :on-change="onSelectFile"
    
  >
    <img v-if="imgUrl" :src="imgUrl" class="avatar" />
    <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
  </el-upload>
  <el-button type="primary" @click="uploadRef.$el.querySelector('.el-upload__input').click()" :icon="Plus" size="large" style="margin-top: 10px;">选择图片</el-button>
    <el-button type="success" @click="onUpdateAvatar" :icon="Upload" size="large" style="margin-top: 10px;">上传头像</el-button>
    </page-container>
</template>


<style lang="scss" scoped>
.avatar-uploader {
  :deep() {
    .avatar {
      width: 278px;
      height: 278px;
      display: block;
    }
    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }
    .el-upload:hover {
      border-color: var(--el-color-primary);
    }
    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 278px;
      height: 278px;
      text-align: center;
    }
  }
}
</style>